src/clientiface.cpp

   1 /*
   2 Minetest
   3 Copyright (C) 2010-2014 celeron55, Perttu Ahola <celeron55@gmail.com>
   4
   5 This program is free software; you can redistribute it and/or modify
   6 it under the terms of the GNU Lesser General Public License as published by
   7 the Free Software Foundation; either version 2.1 of the License, or
   8 (at your option) any later version.
   9
  10 This program is distributed in the hope that it will be useful,
  11 but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 GNU Lesser General Public License for more details.
  14
  15 You should have received a copy of the GNU Lesser General Public License along
  16 with this program; if not, write to the Free Software Foundation, Inc.,
  17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18 */
  19
  20 #include <sstream>
  21
  22 #include "clientiface.h"
  23 #include "util/numeric.h"
  24 #include "util/mathconstants.h"
  25 #include "player.h"
  26 #include "settings.h"
  27 #include "mapblock.h"
  28 #include "network/connection.h"
  29 #include "environment.h"
  30 #include "map.h"
  31 #include "emerge.h"
  32 #include "serverobject.h"              // TODO this is used for cleanup of only
  33 #include "log.h"
  34
  35 const char *ClientInterface::statenames[] = {
  36         "Invalid",
  37         "Disconnecting",
  38         "Denied",
  39         "Created",
  40         "InitSent",
  41         "InitDone",
  42         "DefinitionsSent",
  43         "Active"
  44 };
  45
  46
  47
  48 std::string ClientInterface::state2Name(ClientState state)
  49 {
  50         return statenames[state];
  51 }
  52
  53 void RemoteClient::ResendBlockIfOnWire(v3s16 p)
  54 {
  55         // if this block is on wire, mark it for sending again as soon as possible
  56         if (m_blocks_sending.find(p) != m_blocks_sending.end()) {
  57                 SetBlockNotSent(p);
  58         }
  59 }
  60
  61 void RemoteClient::GetNextBlocks (
  62                 ServerEnvironment *env,
  63                 EmergeManager * emerge,
  64                 float dtime,
  65                 std::vector<PrioritySortedBlockTransfer> &dest)
  66 {
  67         DSTACK(__FUNCTION_NAME);
  68
  69
  70         // Increment timers
  71         m_nothing_to_send_pause_timer -= dtime;
  72         m_nearest_unsent_reset_timer += dtime;
  73
  74         if(m_nothing_to_send_pause_timer >= 0)
  75                 return;
  76
  77         Player *player = env->getPlayer(peer_id);
  78         // This can happen sometimes; clients and players are not in perfect sync.
  79         if(player == NULL)
  80                 return;
  81
  82         // Won't send anything if already sending
  83         if(m_blocks_sending.size() >= g_settings->getU16
  84                         ("max_simultaneous_block_sends_per_client"))
  85         {
  86                 //infostream<<"Not sending any blocks, Queue full."<<std::endl;
  87                 return;
  88         }
  89
  90         v3f playerpos = player->getPosition();
  91         v3f playerspeed = player->getSpeed();
  92         v3f playerspeeddir(0,0,0);
  93         if(playerspeed.getLength() > 1.0*BS)
  94                 playerspeeddir = playerspeed / playerspeed.getLength();
  95         // Predict to next block
  96         v3f playerpos_predicted = playerpos + playerspeeddir*MAP_BLOCKSIZE*BS;
  97
  98         v3s16 center_nodepos = floatToInt(playerpos_predicted, BS);
  99
 100         v3s16 center = getNodeBlockPos(center_nodepos);
 101
 102         // Camera position and direction
 103         v3f camera_pos = player->getEyePosition();
 104         v3f camera_dir = v3f(0,0,1);
 105         camera_dir.rotateYZBy(player->getPitch());
 106         camera_dir.rotateXZBy(player->getYaw());
 107
 108         /*infostream<<"camera_dir=("<<camera_dir.X<<","<<camera_dir.Y<<","
 109                         <<camera_dir.Z<<")"<<std::endl;*/
 110
 111         /*
 112                 Get the starting value of the block finder radius.
 113         */
 114
 115         if(m_last_center != center)
 116         {
 117                 m_nearest_unsent_d = 0;
 118                 m_last_center = center;
 119         }
 120
 121         /*infostream<<"m_nearest_unsent_reset_timer="
 122                         <<m_nearest_unsent_reset_timer<<std::endl;*/
 123
 124         // Reset periodically to workaround for some bugs or stuff
 125         if(m_nearest_unsent_reset_timer > 20.0)
 126         {
 127                 m_nearest_unsent_reset_timer = 0;
 128                 m_nearest_unsent_d = 0;
 129                 //infostream<<"Resetting m_nearest_unsent_d for "
 130                 //              <<server->getPlayerName(peer_id)<<std::endl;
 131         }
 132
 133         //s16 last_nearest_unsent_d = m_nearest_unsent_d;
 134         s16 d_start = m_nearest_unsent_d;
 135
 136         //infostream<<"d_start="<<d_start<<std::endl;
 137
 138         u16 max_simul_sends_setting = g_settings->getU16
 139                         ("max_simultaneous_block_sends_per_client");
 140         u16 max_simul_sends_usually = max_simul_sends_setting;
 141
 142         /*
 143                 Check the time from last addNode/removeNode.
 144
 145                 Decrease send rate if player is building stuff.
 146         */
 147         m_time_from_building += dtime;
 148         if(m_time_from_building < g_settings->getFloat(
 149                                 "full_block_send_enable_min_time_from_building"))
 150         {
 151                 max_simul_sends_usually
 152                         = LIMITED_MAX_SIMULTANEOUS_BLOCK_SENDS;
 153         }
 154
 155         /*
 156                 Number of blocks sending + number of blocks selected for sending
 157         */
 158         u32 num_blocks_selected = m_blocks_sending.size();
 159
 160         /*
 161                 next time d will be continued from the d from which the nearest
 162                 unsent block was found this time.
 163
 164                 This is because not necessarily any of the blocks found this
 165                 time are actually sent.
 166         */
 167         s32 new_nearest_unsent_d = -1;
 168
 169         const s16 full_d_max = g_settings->getS16("max_block_send_distance");
 170         s16 d_max = full_d_max;
 171         s16 d_max_gen = g_settings->getS16("max_block_generate_distance");
 172
 173         // Don't loop very much at a time
 174         s16 max_d_increment_at_time = 2;
 175         if(d_max > d_start + max_d_increment_at_time)
 176                 d_max = d_start + max_d_increment_at_time;
 177
 178         s32 nearest_emerged_d = -1;
 179         s32 nearest_emergefull_d = -1;
 180         s32 nearest_sent_d = -1;
 181         //bool queue_is_full = false;
 182
 183         s16 d;
 184         for(d = d_start; d <= d_max; d++) {
 185                 /*
 186                         Get the border/face dot coordinates of a "d-radiused"
 187                         box
 188                 */
 189                 std::vector<v3s16> list = FacePositionCache::getFacePositions(d);
 190
 191                 std::vector<v3s16>::iterator li;
 192                 for(li = list.begin(); li != list.end(); ++li) {
 193                         v3s16 p = *li + center;
 194
 195                         /*
 196                                 Send throttling
 197                                 - Don't allow too many simultaneous transfers
 198                                 - EXCEPT when the blocks are very close
 199
 200                                 Also, don't send blocks that are already flying.
 201                         */
 202
 203                         // Start with the usual maximum
 204                         u16 max_simul_dynamic = max_simul_sends_usually;
 205
 206                         // If block is very close, allow full maximum
 207                         if(d <= BLOCK_SEND_DISABLE_LIMITS_MAX_D)
 208                                 max_simul_dynamic = max_simul_sends_setting;
 209
 210                         // Don't select too many blocks for sending
 211                         if(num_blocks_selected >= max_simul_dynamic)
 212                         {
 213                                 //queue_is_full = true;
 214                                 goto queue_full_break;
 215                         }
 216
 217                         // Don't send blocks that are currently being transferred
 218                         if(m_blocks_sending.find(p) != m_blocks_sending.end())
 219                                 continue;
 220
 221                         /*
 222                                 Do not go over-limit
 223                         */
 224                         if(p.X < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
 225                         || p.X > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
 226                         || p.Y < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
 227                         || p.Y > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
 228                         || p.Z < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
 229                         || p.Z > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE)
 230                                 continue;
 231
 232                         // If this is true, inexistent block will be made from scratch
 233                         bool generate = d <= d_max_gen;
 234
 235                         {
 236                                 /*// Limit the generating area vertically to 2/3
 237                                 if(abs(p.Y - center.Y) > d_max_gen - d_max_gen / 3)
 238                                         generate = false;*/
 239
 240                                 // Limit the send area vertically to 1/2
 241                                 if(abs(p.Y - center.Y) > full_d_max / 2)
 242                                         continue;
 243                         }
 244
 245                         /*
 246                                 Don't generate or send if not in sight
 247                                 FIXME This only works if the client uses a small enough
 248                                 FOV setting. The default of 72 degrees is fine.
 249                         */
 250
 251                         float camera_fov = (72.0*M_PI/180) * 4./3.;
 252                         if(isBlockInSight(p, camera_pos, camera_dir, camera_fov, 10000*BS) == false)
 253                         {
 254                                 continue;
 255                         }
 256
 257                         /*
 258                                 Don't send already sent blocks
 259                         */
 260                         {
 261                                 if(m_blocks_sent.find(p) != m_blocks_sent.end())
 262                                 {
 263                                         continue;
 264                                 }
 265                         }
 266
 267                         /*
 268                                 Check if map has this block
 269                         */
 270                         MapBlock *block = env->getMap().getBlockNoCreateNoEx(p);
 271
 272                         bool surely_not_found_on_disk = false;
 273                         bool block_is_invalid = false;
 274                         if(block != NULL)
 275                         {
 276                                 // Reset usage timer, this block will be of use in the future.
 277                                 block->resetUsageTimer();
 278
 279                                 // Block is dummy if data doesn't exist.
 280                                 // It means it has been not found from disk and not generated
 281                                 if(block->isDummy())
 282                                 {
 283                                         surely_not_found_on_disk = true;
 284                                 }
 285
 286                                 // Block is valid if lighting is up-to-date and data exists
 287                                 if(block->isValid() == false)
 288                                 {
 289                                         block_is_invalid = true;
 290                                 }
 291
 292                                 if(block->isGenerated() == false)
 293                                         block_is_invalid = true;
 294
 295                                 /*
 296                                         If block is not close, don't send it unless it is near
 297                                         ground level.
 298
 299                                         Block is near ground level if night-time mesh
 300                                         differs from day-time mesh.
 301                                 */
 302                                 if(d >= 4)
 303                                 {
 304                                         if(block->getDayNightDiff() == false)
 305                                                 continue;
 306                                 }
 307                         }
 308
 309                         /*
 310                                 If block has been marked to not exist on disk (dummy)
 311                                 and generating new ones is not wanted, skip block.
 312                         */
 313                         if(generate == false && surely_not_found_on_disk == true)
 314                         {
 315                                 // get next one.
 316                                 continue;
 317                         }
 318
 319                         /*
 320                                 Add inexistent block to emerge queue.
 321                         */
 322                         if(block == NULL || surely_not_found_on_disk || block_is_invalid)
 323                         {
 324                                 if (emerge->enqueueBlockEmerge(peer_id, p, generate)) {
 325                                         if (nearest_emerged_d == -1)
 326                                                 nearest_emerged_d = d;
 327                                 } else {
 328                                         if (nearest_emergefull_d == -1)
 329                                                 nearest_emergefull_d = d;
 330                                         goto queue_full_break;
 331                                 }
 332
 333                                 // get next one.
 334                                 continue;
 335                         }
 336
 337                         if(nearest_sent_d == -1)
 338                                 nearest_sent_d = d;
 339
 340                         /*
 341                                 Add block to send queue
 342                         */
 343                         PrioritySortedBlockTransfer q((float)d, p, peer_id);
 344
 345                         dest.push_back(q);
 346
 347                         num_blocks_selected += 1;
 348                 }
 349         }
 350 queue_full_break:
 351
 352         // If nothing was found for sending and nothing was queued for
 353         // emerging, continue next time browsing from here
 354         if(nearest_emerged_d != -1){
 355                 new_nearest_unsent_d = nearest_emerged_d;
 356         } else if(nearest_emergefull_d != -1){
 357                 new_nearest_unsent_d = nearest_emergefull_d;
 358         } else {
 359                 if(d > g_settings->getS16("max_block_send_distance")){
 360                         new_nearest_unsent_d = 0;
 361                         m_nothing_to_send_pause_timer = 2.0;
 362                 } else {
 363                         if(nearest_sent_d != -1)
 364                                 new_nearest_unsent_d = nearest_sent_d;
 365                         else
 366                                 new_nearest_unsent_d = d;
 367                 }
 368         }
 369
 370         if(new_nearest_unsent_d != -1)
 371                 m_nearest_unsent_d = new_nearest_unsent_d;
 372 }
 373
 374 void RemoteClient::GotBlock(v3s16 p)
 375 {
 376         if(m_blocks_sending.find(p) != m_blocks_sending.end())
 377                 m_blocks_sending.erase(p);
 378         else
 379         {
 380                 m_excess_gotblocks++;
 381         }
 382         m_blocks_sent.insert(p);
 383 }
 384
 385 void RemoteClient::SentBlock(v3s16 p)
 386 {
 387         if(m_blocks_sending.find(p) == m_blocks_sending.end())
 388                 m_blocks_sending[p] = 0.0;
 389         else
 390                 infostream<<"RemoteClient::SentBlock(): Sent block"
 391                                 " already in m_blocks_sending"<<std::endl;
 392 }
 393
 394 void RemoteClient::SetBlockNotSent(v3s16 p)
 395 {
 396         m_nearest_unsent_d = 0;
 397
 398         if(m_blocks_sending.find(p) != m_blocks_sending.end())
 399                 m_blocks_sending.erase(p);
 400         if(m_blocks_sent.find(p) != m_blocks_sent.end())
 401                 m_blocks_sent.erase(p);
 402 }
 403
 404 void RemoteClient::SetBlocksNotSent(std::map<v3s16, MapBlock*> &blocks)
 405 {
 406         m_nearest_unsent_d = 0;
 407
 408         for(std::map<v3s16, MapBlock*>::iterator
 409                         i = blocks.begin();
 410                         i != blocks.end(); ++i)
 411         {
 412                 v3s16 p = i->first;
 413
 414                 if(m_blocks_sending.find(p) != m_blocks_sending.end())
 415                         m_blocks_sending.erase(p);
 416                 if(m_blocks_sent.find(p) != m_blocks_sent.end())
 417                         m_blocks_sent.erase(p);
 418         }
 419 }
 420
 421 void RemoteClient::notifyEvent(ClientStateEvent event)
 422 {
 423         std::ostringstream myerror;
 424         switch (m_state)
 425         {
 426         case CS_Invalid:
 427                 //intentionally do nothing
 428                 break;
 429         case CS_Created:
 430                 switch(event)
 431                 {
 432                 case CSE_Init:
 433                         m_state = CS_InitSent;
 434                         break;
 435                 case CSE_Disconnect:
 436                         m_state = CS_Disconnecting;
 437                         break;
 438                 case CSE_SetDenied:
 439                         m_state = CS_Denied;
 440                         break;
 441                 /* GotInit2 SetDefinitionsSent SetMediaSent */
 442                 default:
 443                         myerror << "Created: Invalid client state transition! " << event;
 444                         throw ClientStateError(myerror.str());
 445                 }
 446                 break;
 447         case CS_Denied:
 448                 /* don't do anything if in denied state */
 449                 break;
 450         case CS_InitSent:
 451                 switch(event)
 452                 {
 453                 case CSE_GotInit2:
 454                         confirmSerializationVersion();
 455                         m_state = CS_InitDone;
 456                         break;
 457                 case CSE_Disconnect:
 458                         m_state = CS_Disconnecting;
 459                         break;
 460                 case CSE_SetDenied:
 461                         m_state = CS_Denied;
 462                         break;
 463
 464                 /* Init SetDefinitionsSent SetMediaSent */
 465                 default:
 466                         myerror << "InitSent: Invalid client state transition! " << event;
 467                         throw ClientStateError(myerror.str());
 468                 }
 469                 break;
 470
 471         case CS_InitDone:
 472                 switch(event)
 473                 {
 474                 case CSE_SetDefinitionsSent:
 475                         m_state = CS_DefinitionsSent;
 476                         break;
 477                 case CSE_Disconnect:
 478                         m_state = CS_Disconnecting;
 479                         break;
 480                 case CSE_SetDenied:
 481                         m_state = CS_Denied;
 482                         break;
 483
 484                 /* Init GotInit2 SetMediaSent */
 485                 default:
 486                         myerror << "InitDone: Invalid client state transition! " << event;
 487                         throw ClientStateError(myerror.str());
 488                 }
 489                 break;
 490         case CS_DefinitionsSent:
 491                 switch(event)
 492                 {
 493                 case CSE_SetClientReady:
 494                         m_state = CS_Active;
 495                         break;
 496                 case CSE_Disconnect:
 497                         m_state = CS_Disconnecting;
 498                         break;
 499                 case CSE_SetDenied:
 500                         m_state = CS_Denied;
 501                         break;
 502                 /* Init GotInit2 SetDefinitionsSent */
 503                 default:
 504                         myerror << "DefinitionsSent: Invalid client state transition! " << event;
 505                         throw ClientStateError(myerror.str());
 506                 }
 507                 break;
 508         case CS_Active:
 509                 switch(event)
 510                 {
 511                 case CSE_SetDenied:
 512                         m_state = CS_Denied;
 513                         break;
 514                 case CSE_Disconnect:
 515                         m_state = CS_Disconnecting;
 516                         break;
 517                 /* Init GotInit2 SetDefinitionsSent SetMediaSent SetDenied */
 518                 default:
 519                         myerror << "Active: Invalid client state transition! " << event;
 520                         throw ClientStateError(myerror.str());
 521                         break;
 522                 }
 523                 break;
 524         case CS_Disconnecting:
 525                 /* we are already disconnecting */
 526                 break;
 527         }
 528 }
 529
 530 u32 RemoteClient::uptime()
 531 {
 532         return getTime(PRECISION_SECONDS) - m_connection_time;
 533 }
 534
 535 ClientInterface::ClientInterface(con::Connection* con)
 536 :
 537         m_con(con),
 538         m_env(NULL),
 539         m_print_info_timer(0.0)
 540 {
 541
 542 }
 543 ClientInterface::~ClientInterface()
 544 {
 545         /*
 546                 Delete clients
 547         */
 548         {
 549                 JMutexAutoLock clientslock(m_clients_mutex);
 550
 551                 for(std::map<u16, RemoteClient*>::iterator
 552                         i = m_clients.begin();
 553                         i != m_clients.end(); ++i)
 554                 {
 555
 556                         // Delete client
 557                         delete i->second;
 558                 }
 559         }
 560 }
 561
 562 std::vector<u16> ClientInterface::getClientIDs(ClientState min_state)
 563 {
 564         std::vector<u16> reply;
 565         JMutexAutoLock clientslock(m_clients_mutex);
 566
 567         for(std::map<u16, RemoteClient*>::iterator
 568                 i = m_clients.begin();
 569                 i != m_clients.end(); ++i)
 570         {
 571                 if (i->second->getState() >= min_state)
 572                         reply.push_back(i->second->peer_id);
 573         }
 574
 575         return reply;
 576 }
 577
 578 std::vector<std::string> ClientInterface::getPlayerNames()
 579 {
 580         return m_clients_names;
 581 }
 582
 583
 584 void ClientInterface::step(float dtime)
 585 {
 586         m_print_info_timer += dtime;
 587         if(m_print_info_timer >= 30.0)
 588         {
 589                 m_print_info_timer = 0.0;
 590                 UpdatePlayerList();
 591         }
 592 }
 593
 594 void ClientInterface::UpdatePlayerList()
 595 {
 596         if (m_env != NULL)
 597                 {
 598                 std::vector<u16> clients = getClientIDs();
 599                 m_clients_names.clear();
 600
 601
 602                 if(!clients.empty())
 603                         infostream<<"Players:"<<std::endl;
 604
 605                 for(std::vector<u16>::iterator
 606                         i = clients.begin();
 607                         i != clients.end(); ++i) {
 608                         Player *player = m_env->getPlayer(*i);
 609
 610                         if (player == NULL)
 611                                 continue;
 612
 613                         infostream << "* " << player->getName() << "\t";
 614
 615                         {
 616                                 JMutexAutoLock clientslock(m_clients_mutex);
 617                                 RemoteClient* client = lockedGetClientNoEx(*i);
 618                                 if(client != NULL)
 619                                         client->PrintInfo(infostream);
 620                         }
 621
 622                         m_clients_names.push_back(player->getName());
 623                 }
 624         }
 625 }
 626
 627 void ClientInterface::send(u16 peer_id, u8 channelnum,
 628                 NetworkPacket* pkt, bool reliable)
 629 {
 630         m_con->Send(peer_id, channelnum, pkt, reliable);
 631 }
 632
 633 void ClientInterface::sendToAll(u16 channelnum,
 634                 NetworkPacket* pkt, bool reliable)
 635 {
 636         JMutexAutoLock clientslock(m_clients_mutex);
 637         for(std::map<u16, RemoteClient*>::iterator
 638                 i = m_clients.begin();
 639                 i != m_clients.end(); ++i) {
 640                 RemoteClient *client = i->second;
 641
 642                 if (client->net_proto_version != 0) {
 643                         m_con->Send(client->peer_id, channelnum, pkt, reliable);
 644                 }
 645         }
 646 }
 647
 648 RemoteClient* ClientInterface::getClientNoEx(u16 peer_id, ClientState state_min)
 649 {
 650         JMutexAutoLock clientslock(m_clients_mutex);
 651         std::map<u16, RemoteClient*>::iterator n;
 652         n = m_clients.find(peer_id);
 653         // The client may not exist; clients are immediately removed if their
 654         // access is denied, and this event occurs later then.
 655         if(n == m_clients.end())
 656                 return NULL;
 657
 658         if (n->second->getState() >= state_min)
 659                 return n->second;
 660         else
 661                 return NULL;
 662 }
 663
 664 RemoteClient* ClientInterface::lockedGetClientNoEx(u16 peer_id, ClientState state_min)
 665 {
 666         std::map<u16, RemoteClient*>::iterator n;
 667         n = m_clients.find(peer_id);
 668         // The client may not exist; clients are immediately removed if their
 669         // access is denied, and this event occurs later then.
 670         if(n == m_clients.end())
 671                 return NULL;
 672
 673         if (n->second->getState() >= state_min)
 674                 return n->second;
 675         else
 676                 return NULL;
 677 }
 678
 679 ClientState ClientInterface::getClientState(u16 peer_id)
 680 {
 681         JMutexAutoLock clientslock(m_clients_mutex);
 682         std::map<u16, RemoteClient*>::iterator n;
 683         n = m_clients.find(peer_id);
 684         // The client may not exist; clients are immediately removed if their
 685         // access is denied, and this event occurs later then.
 686         if(n == m_clients.end())
 687                 return CS_Invalid;
 688
 689         return n->second->getState();
 690 }
 691
 692 void ClientInterface::setPlayerName(u16 peer_id,std::string name)
 693 {
 694         JMutexAutoLock clientslock(m_clients_mutex);
 695         std::map<u16, RemoteClient*>::iterator n;
 696         n = m_clients.find(peer_id);
 697         // The client may not exist; clients are immediately removed if their
 698         // access is denied, and this event occurs later then.
 699         if(n != m_clients.end())
 700                 n->second->setName(name);
 701 }
 702
 703 void ClientInterface::DeleteClient(u16 peer_id)
 704 {
 705         JMutexAutoLock conlock(m_clients_mutex);
 706
 707         // Error check
 708         std::map<u16, RemoteClient*>::iterator n;
 709         n = m_clients.find(peer_id);
 710         // The client may not exist; clients are immediately removed if their
 711         // access is denied, and this event occurs later then.
 712         if(n == m_clients.end())
 713                 return;
 714
 715         /*
 716                 Mark objects to be not known by the client
 717         */
 718         //TODO this should be done by client destructor!!!
 719         RemoteClient *client = n->second;
 720         // Handle objects
 721         for(std::set<u16>::iterator
 722                         i = client->m_known_objects.begin();
 723                         i != client->m_known_objects.end(); ++i)
 724         {
 725                 // Get object
 726                 u16 id = *i;
 727                 ServerActiveObject* obj = m_env->getActiveObject(id);
 728
 729                 if(obj && obj->m_known_by_count > 0)
 730                         obj->m_known_by_count--;
 731         }
 732
 733         // Delete client
 734         delete m_clients[peer_id];
 735         m_clients.erase(peer_id);
 736 }
 737
 738 void ClientInterface::CreateClient(u16 peer_id)
 739 {
 740         JMutexAutoLock conlock(m_clients_mutex);
 741
 742         // Error check
 743         std::map<u16, RemoteClient*>::iterator n;
 744         n = m_clients.find(peer_id);
 745         // The client shouldn't already exist
 746         if(n != m_clients.end()) return;
 747
 748         // Create client
 749         RemoteClient *client = new RemoteClient();
 750         client->peer_id = peer_id;
 751         m_clients[client->peer_id] = client;
 752 }
 753
 754 void ClientInterface::event(u16 peer_id, ClientStateEvent event)
 755 {
 756         {
 757                 JMutexAutoLock clientlock(m_clients_mutex);
 758
 759                 // Error check
 760                 std::map<u16, RemoteClient*>::iterator n;
 761                 n = m_clients.find(peer_id);
 762
 763                 // No client to deliver event
 764                 if (n == m_clients.end())
 765                         return;
 766                 n->second->notifyEvent(event);
 767         }
 768
 769         if ((event == CSE_SetClientReady) ||
 770                 (event == CSE_Disconnect)     ||
 771                 (event == CSE_SetDenied))
 772         {
 773                 UpdatePlayerList();
 774         }
 775 }
 776
 777 u16 ClientInterface::getProtocolVersion(u16 peer_id)
 778 {
 779         JMutexAutoLock conlock(m_clients_mutex);
 780
 781         // Error check
 782         std::map<u16, RemoteClient*>::iterator n;
 783         n = m_clients.find(peer_id);
 784
 785         // No client to get version
 786         if (n == m_clients.end())
 787                 return 0;
 788
 789         return n->second->net_proto_version;
 790 }
 791
 792 void ClientInterface::setClientVersion(u16 peer_id, u8 major, u8 minor, u8 patch, std::string full)
 793 {
 794         JMutexAutoLock conlock(m_clients_mutex);
 795
 796         // Error check
 797         std::map<u16, RemoteClient*>::iterator n;
 798         n = m_clients.find(peer_id);
 799
 800         // No client to set versions
 801         if (n == m_clients.end())
 802                 return;
 803
 804         n->second->setVersionInfo(major,minor,patch,full);
 805 }